From 4b00f2bb53be47598f12e265ccf1e67469dd3248 Mon Sep 17 00:00:00 2001
From: astaric <anze.staric@gmail.com>
Date: Wed, 28 Mar 2018 15:09:16 +0200
Subject: [PATCH 1/2] scatterplot: limit number of points displayed in tooltip

---
 Orange/widgets/visualize/owscatterplotgraph.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Orange/widgets/visualize/owscatterplotgraph.py b/Orange/widgets/visualize/owscatterplotgraph.py
index 764e85e4152..4d91cc4a53c 100644
--- a/Orange/widgets/visualize/owscatterplotgraph.py
+++ b/Orange/widgets/visualize/owscatterplotgraph.py
@@ -36,6 +36,8 @@
 
 SELECTION_WIDTH = 5
 MAX = 11  # maximum number of colors or shapes (including Other)
+MAX_POINTS_IN_TOOLTIP = 20
+
 
 class PaletteItemSample(ItemSample):
     """A color strip to insert into legends for discretized continuous values"""
@@ -1227,8 +1229,16 @@ def point_data(p):
 
         act_pos = self.scatterplot_item.mapFromScene(event.scenePos())
         points = self.scatterplot_item.pointsAt(act_pos)
+
         if len(points):
-            text = "<hr/>".join(point_data(point) for point in points)
+            if len(points) > MAX_POINTS_IN_TOOLTIP:
+                text = "{} instances<hr/>{}<hr/>...".format(
+                    len(points),
+                    "<hr/>".join(point_data(point) for point in points[:5])
+                )
+            else:
+                text = "<hr/>".join(point_data(point) for point in points)
+
             QToolTip.showText(event.screenPos(), text, widget=self.plot_widget)
             return True
         else:

From ca678b5f733d327393a5090639108d303b8b25e8 Mon Sep 17 00:00:00 2001
From: astaric <anze.staric@gmail.com>
Date: Fri, 30 Mar 2018 09:47:00 +0200
Subject: [PATCH 2/2] scatterplot: reduce MAX_POINTS_IN_TOOLTIP

---
 Orange/widgets/visualize/owscatterplotgraph.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Orange/widgets/visualize/owscatterplotgraph.py b/Orange/widgets/visualize/owscatterplotgraph.py
index 4d91cc4a53c..4b0ad61b0cb 100644
--- a/Orange/widgets/visualize/owscatterplotgraph.py
+++ b/Orange/widgets/visualize/owscatterplotgraph.py
@@ -36,7 +36,7 @@
 
 SELECTION_WIDTH = 5
 MAX = 11  # maximum number of colors or shapes (including Other)
-MAX_POINTS_IN_TOOLTIP = 20
+MAX_POINTS_IN_TOOLTIP = 5
 
 
 class PaletteItemSample(ItemSample):
@@ -1234,7 +1234,7 @@ def point_data(p):
             if len(points) > MAX_POINTS_IN_TOOLTIP:
                 text = "{} instances<hr/>{}<hr/>...".format(
                     len(points),
-                    "<hr/>".join(point_data(point) for point in points[:5])
+                    "<hr/>".join(point_data(point) for point in points[:MAX_POINTS_IN_TOOLTIP])
                 )
             else:
                 text = "<hr/>".join(point_data(point) for point in points)